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Security-Center Terxon SX Profiline-Alarmpaket ...
489,41 € *
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Kurzinfo: Terxon SX Full Kit with Dialer - Haussicherungssystem Gruppe Integrierte Systeme & Automatisierung Hersteller ABUS Hersteller Art. Nr. AZ4350 EAN/UPC 4043158018127 Produktbeschreibung: Terxon SX Full Kit with Dialer - Haussicherungssystem Produkttyp Haussicherungssystem Stromquelle Verdrahtet, Batterie Paketinhalt Bedienfeld, Sirene, 2 x Bewegungssensoren, 5x x Tür- und Fenstersensoren, PSTN Wähler, Schlüsselschalter, 5 Terminalverteiler Anzeige LCD Ausführliche Details Allgemein Produkttyp Haussicherungssystem Stromquelle Verdrahtet, Batterie Paketinhalt Bedienfeld, Sirene, 2 x Bewegungssensoren, 5x x Tür- und Fenstersensoren, PSTN Wähler, Schlüsselschalter, 5 Terminalverteiler Merkmale Manipulationserkennung Internet der Dinge (IoT) Anzeige LCD Bewegungssensor Erkennungsmodus Passivinfrarot (PIR) Erkennungsbereich 15 m Merkmale Kriechbereich, weißer Lichtfilter Verschiedenes Mitgeliefertes Zubehör 12V alkalische Batterie, Alarmkabel Produktmaterial Metall, ABS-Kunststoff Abmessungen

Anbieter: JACOB Computer
Stand: 08.08.2020
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Wideband Tdd: Wcdma for the Unpaired Spectrum
206,35 € *
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3rd generation radio systems will be increasingly developed, deployed and operated in the years to come. TDD is one of two main approaches to implementing these 3G systems, so that there will be an increasing need for the engineering community to learn quickly and comprehensively about the TDD technology. As 3G systems become popular, the topics will no doubt be introduced to academic curricula and will also provide a basis for future research. This book provides comprehensive coverage of TDD. It is essentially a Radio Access Network technology and the book embraces the structure of the radio interface as well as the user equipment and network equipment. In addition, Wideband TDD also covers the connection of the TDD Radio Access Network to the 3G Core Network and public switched networks (PSTN) as well as public and private packet networks (Internet and Intranet). Services, applications and performance are also addressed. Finally, TDD is compared with other radio access technologies, namely FDD, TD-SCDMA and WLAN. TD-SCDMA is the Narrowband version of TDD in 3G, and WLAN standards address wireless computer communications. Although there are a number of books published on 3G and UMTS, most of the focus of these books has been on FDD component of 3G. Wideband TDD: * Describes all aspects of TDD in a single comprehensive manner * Addresses TDD technology, TDD systems and the TDD market place * Discusses deployment scenarios and Radio Resource Management for TDD * Provides a comparison of TDD with other radio access technologies, namely FDD, TD-SCDMA and wireless LANs This will prove an essential addition to the bookshelf of professional communication and software engineers, development engineers, technical marketing professionals, researchers in industry, wireless equipment vendors such as Siemens, Nokia and InterDigital, operators and service providers. It will also provide a comprehensive overview of TDD for postgraduates who are taking advanced courses in Mobile Wireless communications.

Anbieter: buecher
Stand: 08.08.2020
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Wideband Tdd: Wcdma for the Unpaired Spectrum
206,35 € *
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3rd generation radio systems will be increasingly developed, deployed and operated in the years to come. TDD is one of two main approaches to implementing these 3G systems, so that there will be an increasing need for the engineering community to learn quickly and comprehensively about the TDD technology. As 3G systems become popular, the topics will no doubt be introduced to academic curricula and will also provide a basis for future research. This book provides comprehensive coverage of TDD. It is essentially a Radio Access Network technology and the book embraces the structure of the radio interface as well as the user equipment and network equipment. In addition, Wideband TDD also covers the connection of the TDD Radio Access Network to the 3G Core Network and public switched networks (PSTN) as well as public and private packet networks (Internet and Intranet). Services, applications and performance are also addressed. Finally, TDD is compared with other radio access technologies, namely FDD, TD-SCDMA and WLAN. TD-SCDMA is the Narrowband version of TDD in 3G, and WLAN standards address wireless computer communications. Although there are a number of books published on 3G and UMTS, most of the focus of these books has been on FDD component of 3G. Wideband TDD: * Describes all aspects of TDD in a single comprehensive manner * Addresses TDD technology, TDD systems and the TDD market place * Discusses deployment scenarios and Radio Resource Management for TDD * Provides a comparison of TDD with other radio access technologies, namely FDD, TD-SCDMA and wireless LANs This will prove an essential addition to the bookshelf of professional communication and software engineers, development engineers, technical marketing professionals, researchers in industry, wireless equipment vendors such as Siemens, Nokia and InterDigital, operators and service providers. It will also provide a comprehensive overview of TDD for postgraduates who are taking advanced courses in Mobile Wireless communications.

Anbieter: buecher
Stand: 08.08.2020
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Building Telephony Systems with OpenSIPS 1.6 (e...
20,70 € *
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In DetailSIP is the most important VoIP protocol and OpenSIPS is clearly the open source leader in VoIP platforms based on pure SIP. The whole telecommunication industry is changing to an IP environment, and telephony in the way we know today will disappear in less than ten years. SIP is the protocol leading this disruptive revolution and it is one of the main protocols on next-generation networks. While a VoIP provider is not the only kind of SIP infrastructure created using OpenSIPS, it is certainly one of the most difficult to implement.This book will give you a competitive edge by helping you to create a SIP infrastructure capable of handling tens of thousands of subscribers. You can extend the examples given in this book easily to other applications such as a SIP router, load balancing, IP PBX, and Hosted PBX as well. This book is an update of the title Building Telephony Systems with OpenSER.The book starts with the simplest configuration and evolves chapter by chapter teaching you how to add new features and modules. It will first teach you the basic concepts of SIP and SIP routing. Then, you will start applying the theory by installing OpenSIPS and creating the configuration file. You will learn about features such as authentication, PSTN connectivity, user portals, media server integration, billing, NAT traversal, and monitoring. The book uses a fictional VoIP provider to explain OpenSIPS. The idea is to have a simple but complete running VoIP provider by the end of the book.A practical guide to building an efficient SIP telephony systemApproachThis is a practical, hands-on book based around a fictitious case study VoIP Provider that you will build on a development server using OpenSIPS 1.6. The case study grows chapter by chapter, from installing your local development server, right up to the finished VoIP provider.Who this book is forThis book is for readers who want to understand how to build a SIP provider from scratch using OpenSIPS. It is suitable for VoIP providers, large enterprises, and universities.Telephony and Linux experience will be helpful but is not essential. Readers need not have prior knowledge of OpenSIPS. This book will also help readers who were using OpenSER but are now confused with the new OpenSIPS.

Anbieter: buecher
Stand: 08.08.2020
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Building Telephony Systems with OpenSIPS 1.6 (e...
20,70 € *
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In DetailSIP is the most important VoIP protocol and OpenSIPS is clearly the open source leader in VoIP platforms based on pure SIP. The whole telecommunication industry is changing to an IP environment, and telephony in the way we know today will disappear in less than ten years. SIP is the protocol leading this disruptive revolution and it is one of the main protocols on next-generation networks. While a VoIP provider is not the only kind of SIP infrastructure created using OpenSIPS, it is certainly one of the most difficult to implement.This book will give you a competitive edge by helping you to create a SIP infrastructure capable of handling tens of thousands of subscribers. You can extend the examples given in this book easily to other applications such as a SIP router, load balancing, IP PBX, and Hosted PBX as well. This book is an update of the title Building Telephony Systems with OpenSER.The book starts with the simplest configuration and evolves chapter by chapter teaching you how to add new features and modules. It will first teach you the basic concepts of SIP and SIP routing. Then, you will start applying the theory by installing OpenSIPS and creating the configuration file. You will learn about features such as authentication, PSTN connectivity, user portals, media server integration, billing, NAT traversal, and monitoring. The book uses a fictional VoIP provider to explain OpenSIPS. The idea is to have a simple but complete running VoIP provider by the end of the book.A practical guide to building an efficient SIP telephony systemApproachThis is a practical, hands-on book based around a fictitious case study VoIP Provider that you will build on a development server using OpenSIPS 1.6. The case study grows chapter by chapter, from installing your local development server, right up to the finished VoIP provider.Who this book is forThis book is for readers who want to understand how to build a SIP provider from scratch using OpenSIPS. It is suitable for VoIP providers, large enterprises, and universities.Telephony and Linux experience will be helpful but is not essential. Readers need not have prior knowledge of OpenSIPS. This book will also help readers who were using OpenSER but are now confused with the new OpenSIPS.

Anbieter: buecher
Stand: 08.08.2020
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MAIDS for VoIP
68,00 € *
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Compared to traditional (PSTN) voice networks, a Voice over Internet Protocol network is a convergence of a signaling network and a data network using Internet Protocol (IP). The use of shared media by VoIP systems opens the door to some uncertainty as to the source of a call. While in the traditional voice networks one has to tap into a specific circuit to eavesdrop, in an IP network any equipment connected to the target LAN can identify, store and playback the VoIP packets that traverse that LAN. An unprotected, unauthenticated IP network makes VoIP susceptible to hostile use, such as call hijacking, connection tear down, denial of service, or sending computer viruses over the network. In this work, we perform a series of attacks against a VoIP application, and prove that they succeed with nothing more than a couple of identity tokens captured from the network traffic as prerequisites. We then design an Intrusion Detection System implementing a gradual attack-response procedure, destined to inform and protect the End-Users of the Application Under Test.

Anbieter: Dodax
Stand: 08.08.2020
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IP Phone
29,00 € *
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An IP phone uses Voice over IP technologies allowing telephone calls to be made over an IP network such as the internet instead of the ordinary PSTN system. Calls can traverse the Internet, or a private IP Network such as that of a company. The phones use control protocols such as Session Initiation Protocol, Skinny Client Control Protocol or one of various proprietary protocols such as that used by Skype. IP phones can be simple software-based Softphones or purpose-built hardware devices that appear much like an ordinary telephone or a cordless phone. Ordinary PSTN phones are used as IP phones with analog telephony adapters (ATA).It may have many features an analog phone doesn't support, such as e-mail-like IDs for contacts that may be easier to remember than names or phone numbers.

Anbieter: Dodax
Stand: 08.08.2020
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Tnz Group
49,00 € *
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High Quality Content by WIKIPEDIA articles! TNZ Group Ltd is a New Zealand based telecommunications supplier founded in 2001. It was formed as a new corporate entity to feed the growing messaging requirements of today's leading businesses, specializing in building solutions to suit customer requests. Working with Fax, SMS, Email, PSTN and VoIP, TNZ Group Ltd works to take these technologies and integrate them with the Internet to create Unified messaging.It largely operates as a telecommunications wholesaler and supplier, offering its messaging technologies to resellers. TNZ Group Ltd is privately owned and operated from Auckland, New Zealand.

Anbieter: Dodax
Stand: 08.08.2020
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Design and Simulation of LAN with GNS3 for a Me...
49,90 € *
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Before now, all telephony services are based on the circuit-switched networks, known as the Public Switched Telephone Networks (PSTN). But nowadays, a new trend has emerged that provides telephony services over internet protocol networks, referred to as Voice over IP (VoIP) or IP telephony. There are a few driving force and motivational factors that are behind the VoIP network - the cost savings, the voice and data applications' integration etc are the crux of the innovation. The cost saving is achieved mainly by reduced cost of making a long distance call, maintenance, deployment, management etc., while the integrated applications of voice and data are teleconferencing, integrated voice mail and email, the call distribution intelligence and automation. Therefor, with this era of innovative business practices in information technology that involves voice and data networks integration, both transmitted over the internet and implemented on a local area network (LAN).This book is undoubtedly beneficial to Small and Medium sized businesses for convergence of data and voice networks in their existing data network to accommodate the VoIP solution in the same LAN.

Anbieter: Dodax
Stand: 08.08.2020
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